Selective harmonic control: A general problem formulation and selected solutions

Jason R. Wells, Brett M. Nee, Patrick L. Chapman, Philip T. Krein

Research output: Contribution to journalArticlepeer-review


Selective harmonic elimination/control has been a widely researched alternative to traditional pulse-width modulation techniques. Previous and current work has made fundamental assumptions that enforce output waveform quarter-wave symmetry, presumably in order to reduce the complexity of the resulting equations. However, the quarter-wave symmetric assumption is not strictly necessary. It restricts the solution space, which can result in sub-optimal solutions with regards to the uncontrolled harmonic distribution. A more general formulation is proposed, removing the quarter-wave symmetry constraint for two classes of the m-level, n-harmonic harmonic control problem. The special cases of two- and three-level harmonic elimination are presented in detail along with representative solutions for each harmonic control problem. New solutions previously unattainable based on quarter-wave symmetric techniques are identified.

Original languageEnglish (US)
Pages (from-to)1337-1345
Number of pages9
JournalIEEE Transactions on Power Electronics
Issue number6
StatePublished - Nov 2005


  • Harmonic control
  • Harmonic elimination
  • Harmonic reduction
  • Harmonics
  • Programmed pulse-width modulation (PWM)
  • Selective harmonic elimination (SHE)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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